Most of the breweries are run out of warehouses, with large metal fermentation tanks and systems of pipes and levers to turn hops, yeast and other ingredients into bold flavored pints. The brewers want to give visitors a chance to taste the beverages where they’re made, often blurring the lines between production facility and bar.

The guild allows the Vista beer makers to collectively communicate their wants and needs, such as uniform tasting hours, to the city.

“I think Vista was kind of blindsided by having this big pop up, so they didn’t have regulations in place that really made sense for everybody,” said Kevin Buckley, Latitude 33 head of brewery operations. “We also kind of need it to make sense for us instead of having some random ordinance that just hinders us from making good tax money for (Vista), having the patrons have fun and having us get our job done smoothly.”

In the past six months, Aztec, Prohibition. and Latitude 33 have opened their taps to the world. When Mother Earth Brew Co. began churning out beer in 2010, city officials were less lenient with tasting-room hours than they have been for those that opened recently.

Beyond the obvious unfairness for the business owners, brewers worried the disjointed hours would make beer tasting in the city cumbersome for visitors.

“What we wanted to achieve was to get everybody to sit down together and go look, if we’re going to be open, let’s try and be open on the same days and for close to the same hours for when people come and visit us,” said Daniel Love, owner of Mother Earth and the point person for the Vista Brewers Guild. “(If) Iron Fist says, ‘Go down to Mother Earth’ and I’m closed, it’s a bad experience for tourists who come down here.”

All breweries in the city are now allowed to have tasting from 3 to 10 p.m. Monday through Friday and from noon to 10 p.m. Saturday and Sunday.

“We’re very engaged in the business community, so we hear the needs of the business community and trends that might start to emerge,” said Kevin Ham, Vista economic development director. “It’s a new industry that’s growing for the region and, for Vista, provides jobs and is also a tourist attraction.”

If the brewery growth rate continues, the city and guild will soon have more issues to consider, such as saturation.

“You can’t go to the city and go, ‘Look you’ve got to stop these guys from opening.’ That’s just not the American way,” Love said. “But what we can do is go to the city and go look you need to start thinking about at what point are we impacted. When is it the right time to start being a little tougher on the permits. You don’t want a brewery every hundred feet like 7-Elevens, so let’s be smart.”

The brewers were singled out as an important and growing part of the city’s economy in a recent survey of the business park. The breweries are doing well, in fact, they can’t make enough beer to keep up with demand.

“It’s great that, number one, I can’t supply enough beer for the demand, and it’s great that I have so many people that they get mad because they can’t get in here,” Love said. “That’s a great problem to have. But at some point we’ve got to solve it … because people will eventually say, look, I’m just fed up with it. I’ll go somewhere else.”

Love said Mother Earth has expanded three times in the last two years, expects to be hiring soon and just purchased a bottling line to offer beer on shelves instead of just on tap. He expects to brew about 1,000 barrels this year.

Green Flash, once Vista’s largest brewery, left its 14,000-barrel production facility in the business park for a 100,000 barrel room in Mira Mesa, opening its new tasting room last summer.

Latitude 33, which planned to hold its grand opening Saturday, set up shop in the old Vista plant.

San Diego County, particularly North County, is considered by many to be a craft beer hub.

“Having all these breweries in one spot makes it a destination,” said Eve Sieminski, owner of Iron Fist Brewing Co.

Though they’re technically competitors offering the same product, many of the brewers enjoy being near others.

“It can do nothing but help this area if people know that this is a destination for breweries,” said Ron Adams, owner of Prohibition. “We encourage them to go visit the other breweries.”

For some, the many beer production shops makes them more confident their new venture will succeed.

“Every business is a risky startup,” said Buckley of Latitude 33. “But here it’s a little bit more comfortable just because there’s already that brewing scene and the community is so well receiving of most breweries. It takes some of the risk of it.”

Beer makers like Stone Brewing Company in Escondido and Karl Strauss produce tens of thousands of barrels per year.

Some of the Vista brewers have less lofty goals than their large-scale craft brew counterparts.

“We don’t have to be Stone or anything like that,” said 22-year-old Iron Fist Master Brewer Brandon Sieminski. “I’m perfectly satisfied to make enough to get by to make beer for a living.”